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authorHeiko Schocher <hs@denx.de>2009-02-10 09:38:52 +0100
committerBen Warren <biggerbadderben@gmail.com>2009-02-22 23:49:33 -0800
commit2f70c49e5b9813635ad73666aa30f304c7fdeda9 (patch)
tree57b6d6625de2648dab93e71cf74a7329c81c6adc /net
parentad2d16393e9f684e4a9255f42e8bfdd819b67a87 (diff)
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netloop: speed up NetLoop
NetLoop polls every cycle with getenv some environment variables. This is horribly slow, especially when the environment is big. This patch reads only the environment variables in NetLoop, when they were changed. Also moved the init part of the NetLoop function in a seperate function. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/eth.c11
-rw-r--r--net/net.c134
2 files changed, 84 insertions, 61 deletions
diff --git a/net/eth.c b/net/eth.c
index ec2ef1a..217e885 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -28,6 +28,9 @@
#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
+static char *act = NULL;
+static int env_changed_id = 0;
+
/*
* CPU and board-specific Ethernet initializations. Aliased function
* signals caller to move on
@@ -461,13 +464,17 @@ void eth_try_another(int first_restart)
#ifdef CONFIG_NET_MULTI
void eth_set_current(void)
{
- char *act;
struct eth_device* old_current;
+ int env_id;
if (!eth_current) /* XXX no current */
return;
- act = getenv("ethact");
+ env_id = get_env_id();
+ if ((act == NULL) || (env_changed_id != env_id)) {
+ act = getenv("ethact");
+ env_changed_id = env_id;
+ }
if (act != NULL) {
old_current = eth_current;
do {
diff --git a/net/net.c b/net/net.c
index 459baf4..a55f4d3 100644
--- a/net/net.c
+++ b/net/net.c
@@ -209,6 +209,8 @@ uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
ulong NetArpWaitTimerStart;
int NetArpWaitTry;
+int env_changed_id = 0;
+
void ArpRequest (void)
{
int i;
@@ -276,6 +278,78 @@ void ArpTimeoutCheck(void)
}
}
+int
+NetInitLoop(proto_t protocol)
+{
+ bd_t *bd = gd->bd;
+ int env_id = get_env_id ();
+
+ /* update only when the environment has changed */
+ if (env_changed_id == env_id)
+ return 0;
+
+ switch (protocol) {
+#if defined(CONFIG_CMD_NFS)
+ case NFS:
+#endif
+#if defined(CONFIG_CMD_PING)
+ case PING:
+#endif
+#if defined(CONFIG_CMD_SNTP)
+ case SNTP:
+#endif
+ case NETCONS:
+ case TFTP:
+ NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
+ NetOurGatewayIP = getenv_IPaddr ("gatewayip");
+ NetOurSubnetMask= getenv_IPaddr ("netmask");
+ NetOurVLAN = getenv_VLAN("vlan");
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
+
+ switch (protocol) {
+#if defined(CONFIG_CMD_NFS)
+ case NFS:
+#endif
+ case NETCONS:
+ case TFTP:
+ NetServerIP = getenv_IPaddr ("serverip");
+ break;
+#if defined(CONFIG_CMD_PING)
+ case PING:
+ /* nothing */
+ break;
+#endif
+#if defined(CONFIG_CMD_SNTP)
+ case SNTP:
+ /* nothing */
+ break;
+#endif
+ default:
+ break;
+ }
+
+ break;
+ case BOOTP:
+ case RARP:
+ /*
+ * initialize our IP addr to 0 in order to accept ANY
+ * IP addr assigned to us by the BOOTP / RARP server
+ */
+ NetOurIP = 0;
+ NetServerIP = getenv_IPaddr ("serverip");
+ NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
+ case CDP:
+ NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
+ break;
+ default:
+ break;
+ }
+ env_changed_id = env_id;
+ return 0;
+}
+
/**********************************************************************/
/*
* Main network processing loop.
@@ -340,65 +414,7 @@ restart:
* here on, this code is a state machine driven by received
* packets and timer events.
*/
-
- switch (protocol) {
-#if defined(CONFIG_CMD_NFS)
- case NFS:
-#endif
-#if defined(CONFIG_CMD_PING)
- case PING:
-#endif
-#if defined(CONFIG_CMD_SNTP)
- case SNTP:
-#endif
- case NETCONS:
- case TFTP:
- NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
- NetOurGatewayIP = getenv_IPaddr ("gatewayip");
- NetOurSubnetMask= getenv_IPaddr ("netmask");
- NetOurVLAN = getenv_VLAN("vlan");
- NetOurNativeVLAN = getenv_VLAN("nvlan");
-
- switch (protocol) {
-#if defined(CONFIG_CMD_NFS)
- case NFS:
-#endif
- case NETCONS:
- case TFTP:
- NetServerIP = getenv_IPaddr ("serverip");
- break;
-#if defined(CONFIG_CMD_PING)
- case PING:
- /* nothing */
- break;
-#endif
-#if defined(CONFIG_CMD_SNTP)
- case SNTP:
- /* nothing */
- break;
-#endif
- default:
- break;
- }
-
- break;
- case BOOTP:
- case RARP:
- /*
- * initialize our IP addr to 0 in order to accept ANY
- * IP addr assigned to us by the BOOTP / RARP server
- */
- NetOurIP = 0;
- NetServerIP = getenv_IPaddr ("serverip");
- NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
- NetOurNativeVLAN = getenv_VLAN("nvlan");
- case CDP:
- NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
- NetOurNativeVLAN = getenv_VLAN("nvlan");
- break;
- default:
- break;
- }
+ NetInitLoop(protocol);
switch (net_check_prereq (protocol)) {
case 1: